Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities:
Net income	$ 11,481	$ 7,491
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Income from discontinued operations	(635)	(1,231)
Loss on sale of discontinued operations		1,015
Depreciation and amortization	2,174	2,214
Stock-based compensation	1,983	2,189
Deferred taxes	34	(548)
Gain on sale of available-for-sale securities and strategic investments	(1,460)	(172)
Impairment loss on strategic investments	129	804
Amortization of premium on held-to-maturity securities		31
Reduction of tax benefit from stock-based compensation plans	252
Other		48
Change in operating assets and liabilities:
Accounts receivable	333	(793)
Inventories	314	(82)
Prepaids and other	(305)	(168)
Accounts payable and accrued liabilities	(876)	(3,445)
Income taxes	(1,520)	4,632
Net cash provided by operating activities from continuing operations	11,904	11,985
Investing Activities:
Purchases of property and equipment	(1,448)	(429)
Purchases of available-for-sale securities	(34,599)	(35,420)
Sales and maturities of available-for-sale securities	34,487	35,203
Maturities of held-to-maturity securities		3,000
Cash received from sale of strategic investments	2,286
Cash (transferred to) received from discontinued operations	(118)	28,304
Net cash provided by investing activities from continuing operations	608	30,658
Financing Activities:
Reduction of tax benefit from stock-based compensation plans	(252)
Issuance of common stock	273	280
Repurchase of common stock	(10,323)
Purchase of common stock to pay employee taxes	(39)	(272)
Net cash (used in) provided by financing activities from continuing operations	(10,341)	8
Net cash provided by continuing operations	2,171	42,651
Discontinued Operations:
Net cash used in operating activities	(118)	(1,513)
Net cash provided by investing activities		29,817
Net cash provided by (used in) financing activities	118	(28,304)
Net cash provided by discontinued operations
Net change in cash and cash equivalents	2,171	42,651
Cash and Cash Equivalents:
Beginning of period	15,540	23,217
End of period	17,711	65,868
Supplemental Information:
Cash paid for income taxes	5,257	389
Noncash transactions - acquisition of property and equipment on account	$ 19	$ 8